0039039: When Different Delta task creation fails with no available stock no message is shown to the user

Description

In a scenario where all the available stock is in a unique bin. (using a product with no attributes)

When different is selected creating a delta task the process in the frontend seems to work OK but the task is no modified.

In the Verbosity Log you can see that the delta task generation fails because there is no stock.

Steps To Reproduce

Prerequisites:
Having a product that all the stock available to pick is in a unique bin/attribute.

Steps:
1. Create a picking task.
2. In the Frontend set less quantity than expected and confirm.
3. In the delta task generation popup select Different.
4. Check that the process is correctly synchronized to the backend but the confirmed task is still with the original quantity.
5. Check in the Verbosity Log that the delta task generation has failed.